@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    --background-color: #1a1a2e;
    --surface-color: #dbe5f5;
    --header-color: #aed4ef;
    --text-color: #333333;
    --user-msg-bg: #bbdefb;
    --bot-msg-bg: #ffffff;
    --input-bg: #ffffff;
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --error-color: #e94560;
    --font-family: 'Roboto', sans-serif;
    --border-radius: 12px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 1rem;
    overflow: hidden;
}

.chat-container {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 700px;
    height: 95vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.chat-header {
    background-color: var(--header-color);
    padding: 1rem 1.5rem;
    text-align: center;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.chat-header h1 {
    font-size: 1.5em;
    color: var(--primary-color);
    margin: 0;
    margin-bottom: 10px;
}

.status-display {
    font-size: 0.85em;
    color: var(--secondary-color);
    min-height: 20px;
    transition: color 0.3s ease;
}

.messages-box {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    display: flex;
    max-width: 80%;
    flex-direction: column;
}

.message-content {
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    word-wrap: break-word;
    line-height: 1.6;
}

.message-content p {
    margin: 0;
    color: var(--text-color);
}

.streaming p::after {
    content: '█';
    animation: blink 1s step-end infinite;
    margin-left: 3px;
    font-size: 0.9em;
}

@keyframes blink {
    50% { opacity: 0; }
}

.typing-indicator {
    display: flex;
    align-items: center;
    padding: 10px 0;
}
.typing-indicator span {
    height: 8px;
    width: 8px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    display: inline-block;
    margin: 0 2px;
    animation: bounce 1.4s infinite ease-in-out both;
}
.typing-indicator span:nth-of-type(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-of-type(2) { animation-delay: -0.16s; }
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1.0); }
}

.user-message {
    align-self: flex-end;
    align-items: flex-end;
}

.user-message .message-content {
    background-color: var(--user-msg-bg);
    border-bottom-right-radius: 4px;
}

.bot-message {
    align-self: flex-start;
    align-items: flex-start;
}

.bot-message .message-content {
    background-color: var(--bot-msg-bg);
    border-bottom-left-radius: 4px;
}

.timestamp {
    font-size: 0.75em;
    color: var(--secondary-color);
    margin-top: 0.5rem;
    padding: 0 0.5rem;
}

.chat-footer {
    padding: 1rem 1.5rem;
    background-color: var(--surface-color);
    flex-shrink: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.input-area {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    background-color: var(--input-bg);
    border-radius: var(--border-radius);
    padding: 8px 15px;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.05);
}

#text-input {
    flex-grow: 1;
    border: none;
    background-color: transparent;
    color: var(--text-color);
    font-size: 1em;
    resize: none;
    max-height: 100px;
    overflow-y: auto;
    padding: 15px 0;
}

#text-input:focus {
    outline: none;
}

.icon-button {
    background: none;
    border: none;
    color: var(--secondary-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
    padding: 8px;
    border-radius: 50%;
}

.icon-button:hover {
    color: var(--primary-color);
    background-color: rgba(0,0,0,0.05);
}

#microphone-button.recording {
    color: var(--error-color);
}

@media (max-width: 768px) {
    body { padding: 0; }
    .chat-container { height: 100vh; width: 100vw; border-radius: 0; box-shadow: none; }
    .messages-box { padding: 1rem; }
    .message { max-width: 90%; }
}